For Loop In Rust Increment By 2

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For Loop In Rust Increment Value By 2

A for loop enables a certain collection of statements to be performed repeatedly inside the loop until a specific condition is met.

Syntax

for variable in expression {
    loop code
}

As of Rust 1.28, Iterator::step_by is stable.

To increment by 2 in a for loop in Rust, you can use the step_by method on the Iterator trait.

This method allows you to specify the amount by which the loop should increment on each iteration.

Here's an example of using step_by to increment by 2 in a for loop:

Example

fn main() {
    for x in (1..10).step_by(2) {
        println!("{}", x);
    }
}

Output

1
3
5
7
9

In this example, the for loop will start at 1 and increment by 2 on each iteration.

Use rev()

Another way to increment by 2 in a for loop is to use the .rev() method on the range and then use the .step_by(1) method on the resulting iterator.

This method allows you to increment by 1 in reverse, which is equivalent to incrementing by 2 in the normal direction.

Here's an example of using this method:

for i in (0..10).rev().step_by(1) {
    println!("{}", i);
}

In this example, the for loop will start at 9 and increment by 1 in reverse, printing the numbers 9, 7, 5, 3, and 1.

Summary

Both of these methods provide ways to increment by 2 in a for loop in Rust.

The method you choose will depend on the specific requirements of your code.

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